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Medium, CVSS 6.5amended

Velociraptor: Low-priv analyst reads arbitrary server files via ungated sql() VQL plugin

CVE-2026-85737GHSA-9qq5-422f-33c2

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (www.velocidex.com/golang/velociraptor 0.77.2), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS
  • CVE-2026-85737: 0.24% estimated exploitation activity in the next 30 days; percentile 15.01 (FIRST EPSS, 2026-11-10). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary The `sql()` VQL plugin runs a caller-supplied database driver and connection string with no permission check (`vql/parsers/sql/sql.go:93`, `SQLPlugin.Call`). For `driver='mysql'` or `driver='postgres'` the handle comes from `GetHandleOther` (`sql.go:39`), which passes the connection string straight to Go `database/sql` `sql.Open` (`sql.go:51`) and executes the query (`sql.go:159`). The plugin declares `FILESYSTEM_READ` only as `Info().Permissions` metadata (`sql.go:219`). That metadata is never consulted at runtime: `metadata.go:19` stores it as a string that only the documentation exporter reads (`api/reflect.go:82-110`). Every sibling network plugin (`http_client`, `netcat`, `s3`, `rsyslog`) calls `CheckAccess(acls.NETWORK)` in its own body; `sql()` calls nothing. The built-in `analyst` role holds `ANY_QUERY` but not `FILESYSTEM_READ` or `NETWORK` (`acls/roles.go:222`), and reaches this sink through the notebook query API. Result: a low-priv analyst opens arbitrary…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from osv record GHSA-9qq5-422f-33c2

  2. Revision 1 · created ·

    Published from ghsa record GHSA-9qq5-422f-33c2

Agent brief

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# Patch Next advisory brief: CVE-2026-85737

Advisory: Velociraptor: Low-priv analyst reads arbitrary server files via ungated sql() VQL plugin
IDs: CVE-2026-85737, GHSA-9qq5-422f-33c2
Record: https://patchnext.com/advisories/cve-2026-85737 (revision 2, source checked 10 Nov 2026, 06:45 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: www.velocidex.com/golang/velociraptor 0.77.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go www.velocidex.com/golang/velociraptor: affected < 0.77.2; fixed in 0.77.2

## Suggested inspection (read-only)
- Go www.velocidex.com/golang/velociraptor: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on www.velocidex.com/golang/velociraptor.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-9qq5-422f-33c2 (GitHub-reviewed advisory GHSA-9qq5-422f-33c2 lists affected ranges: Go www.velocidex.com/golang/velociraptor >=0 <=0.77.1)
- Verified: https://osv.dev/vulnerability/GHSA-9qq5-422f-33c2 (OSV record GHSA-9qq5-422f-33c2 lists affected ranges: Go www.velocidex.com/golang/velociraptor >=0 <0.77.2 (fixed))

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